Have a good game!
Reviewed your sheet, and looks good but I caught two things:
1) I think your AC should be 15, if it's Scale Mail (14+DEX) and 12 (+1) Dexterity? I couldn't find where you'd be picking up the extra +1 to get 16.
2) The skills need to be worked out still. You have 2 from background. Then Warlock gets 3+INT modifier skills (your Intelligence in 19)... so that gets you to 9 skills total!
Otherwise, looks good. Mak is approved
Hmm. I could have sworn Scale Mail was 15+ dex. I'll fix that.
Also, Since all his extra skills will come from his Headband, I was going to let you pick them! I posted it earlier, but I know you have a lot on your plate.
The way I'm playing it, the Headband basically records the memories, skills and whatnot of those who wore it before, and it the main way I am learning my magic. The Playtest Warlock is kind of like a Paladin, in that the first few levels don't have a specified Patron, and you pick the Patron at the third level. So at this point, i'm def working with a Fiend, though I don't know who it is. But most of what I'm learning, I'm getting from memories from the headband/hat of Intellect.
So at some point, a powerful mage or sorcerer or warlock, someone with a lot of knowledge in Arcana, wore the hat/headband and it recorded all their experience, and that's what I'm picking up on.
So I was going to let you pick the extra skills, and maybe play around with who may have worn the headband in previous times. You can make them part of a theme or just be random skills I'm picking up from random people that wore the headband, up to you.
If you don't have time for all that, I can go in and select them, but I thought I'd give you something to play with.